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Finding the Fourth Proportional to 858,574.72, 1,287,862 and 297,609.12

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Solution

The fourth proportional to 858,574.72, 1,287,862 and 297,609.12 is: 446,413.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,574.72 : 1,287,862 = 297,609.12 : x
  2. Step 2: Convert to fraction form
    858,574.72/1,287,862 = 297,609.12/x
  3. Step 3: Cross multiply
    858,574.72x = 1,287,862 × 297,609.12
  4. Step 4: Simplify right side
    858,574.72x = 383,279,476,501.44
  5. Step 5: Solve for x
    x = 383,279,476,501.44/858,574.72
  6. Step 6: Final answer
    x = 446,413.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.